--- service: i.root-servers.net start-period: '2014-01-17T00:00:00Z' end-period: '2014-01-18T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2452056766 dns-udp-queries-received-ipv6: 151403696 dns-tcp-queries-received-ipv4: 5361395 dns-tcp-queries-received-ipv6: 285374 dns-udp-responses-sent-ipv4: 2397001382 dns-udp-responses-sent-ipv6: 151525885 dns-tcp-responses-sent-ipv4: 5359172 dns-tcp-responses-sent-ipv6: 289318